/*
 * Copyright (c) 2002, 2003, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
 *
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 *
 *
 *
 *
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 *
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 *
 *
 *
 *
 *
 *
 *
 */

package com.sun.corba.se.impl.oa.poa;

import java.util.Enumeration;

import org.omg.PortableServer.Servant;
import org.omg.PortableServer.ServantManager;
import org.omg.PortableServer.ForwardRequest;
import org.omg.PortableServer.POAPackage.WrongPolicy;
import org.omg.PortableServer.POAPackage.ObjectNotActive;
import org.omg.PortableServer.POAPackage.ServantNotActive;
import org.omg.PortableServer.POAPackage.ObjectAlreadyActive;
import org.omg.PortableServer.POAPackage.ServantAlreadyActive;
import org.omg.PortableServer.POAPackage.NoServant;

import com.sun.corba.se.impl.orbutil.concurrent.SyncUtil;
import com.sun.corba.se.impl.orbutil.ORBUtility;
import com.sun.corba.se.impl.orbutil.ORBConstants;

/**
 * Implementation of POARequesHandler that provides policy specific
 * operations on the POA.
 */
public class POAPolicyMediatorImpl_R_UDS extends POAPolicyMediatorBase_R {

  private Servant defaultServant;

  POAPolicyMediatorImpl_R_UDS(Policies policies, POAImpl poa) {
    // assert policies.retainServants()
    super(policies, poa);
    defaultServant = null;

    // policies.useDefaultServant()
    if (!policies.useDefaultServant()) {
      throw poa.invocationWrapper().policyMediatorBadPolicyInFactory();
    }
  }

  protected java.lang.Object internalGetServant(byte[] id,
      String operation) throws ForwardRequest {
    Servant servant = internalIdToServant(id);
    if (servant == null) {
      servant = defaultServant;
    }

    if (servant == null) {
      throw poa.invocationWrapper().poaNoDefaultServant();
    }

    return servant;
  }

  public void etherealizeAll() {
    // NO-OP
  }

  public ServantManager getServantManager() throws WrongPolicy {
    throw new WrongPolicy();
  }

  public void setServantManager(ServantManager servantManager) throws WrongPolicy {
    throw new WrongPolicy();
  }

  public Servant getDefaultServant() throws NoServant, WrongPolicy {
    if (defaultServant == null) {
      throw new NoServant();
    } else {
      return defaultServant;
    }
  }

  public void setDefaultServant(Servant servant) throws WrongPolicy {
    defaultServant = servant;
    setDelegate(defaultServant, "DefaultServant".getBytes());
  }

  public Servant idToServant(byte[] id)
      throws WrongPolicy, ObjectNotActive {
    ActiveObjectMap.Key key = new ActiveObjectMap.Key(id);
    Servant s = internalKeyToServant(key);

    if (s == null) {
      if (defaultServant != null) {
        s = defaultServant;
      }
    }

    if (s == null) {
      throw new ObjectNotActive();
    }

    return s;
  }
}
